Picture something, anything well known, and keep it to yourself. The AI asks one yes/no question at a time, counts them out of 20, and tells you when it is ready to read your mind. The fun is in finding the thing it cannot get.
There is no trick and no camera: it is deduction. The first questions cut the world in half (alive? man-made? bigger than a microwave?), and every answer removes most of what is left. Watch the questions get oddly specific around question 10.
Pick something specific but not obscure: a particular kitchen tool rather than "a spoon", a lesser-known animal rather than "a dog". Abstract ideas and private things (your neighbour's cat) are off the table because nobody could guess them.
Ask the AI to think of something instead. It locks in its secret before you start and answers your yes/no questions honestly until you crack it or run out of questions.
One screen, many guessers: the group agrees on a secret and takes turns answering. Themed rounds (animals only, foods only) keep it fair for younger players.
Can the AI really read my mind?
No, it deduces. Each yes/no answer narrows the options until only one thing fits.
How many questions does it need?
The limit is 20, counted out loud as it goes. A wrong guess costs a question.
What should I think of?
Anything commonly known and family-friendly: animals, objects, places, foods, famous characters.
Does it cheat when I guess its secret?
No. It commits to the secret before the first question and never changes it.
Is it free?
Yes, free with no sign-up.